bgds2.lc_uivo://org.gavo.dc/bgds/l2/lc_udoi:10.21938/dChYyzuCGA00rsfzfQ8v:QThe GAVO DC teamBlex, J.Hackstein, M.Westhues, C.Ramolla, M.Demleitner, M.Fein, C.Chini, R.2026-04-07T10:09:44ZGAVO Data Centre Team

Mönchhofstrasse 12-14, D-69120 Heidelberg

gavo@ari.uni-heidelberg.de+49 6221 54 1837surveysgalaxy-planesmilky-way-galaxyvariable-starsbroad-band-photometrytime-domain-astronomy BGDS DR2 lightcurves in the Johnson U band. Lightcurves are available in i' and r' for all fields and partially in U, B, V, z, OIII, NB, Halpha and SII if they have enough observations.2026AN....34770087Bhttp://dc.g-vo.org/tableinfo/bgds2.lc_uSurveyResearchIsNewVersionOfBGDS light curves DR1Universitätssternwarte Bochum near Cerro ArmazonesRobotic Bochum Twin Telescope (RoBoTT)3/336,338,450-451,461,472,591-592,613,615,621,651-652,659,662-663 4/1301,1303,1358,1376-1377,1379-1380,1382,1794,1816,1818-1819,1822-1823,1829,1840-1841,1892,1894,1897,2327,2333,2335,2357-2359,2376,2378,2400,2402,2408,2492-2493,2495,2528,2530,2536,2538,2591,2599,2601-2603,2612-2614,2616,2634-2635,2643,2646-2647,2656-2657,2688-269055439 58751.41.777e-19 6.621e-19Opticaltimeseriesbgds2 From the Bochum Galactic Disk Survey, time series have been obtained in the r and i bands on an (up to) nightly basis. Depending on the field, the time series contain up to more than 300 nights over 9 years. Each measurement in r and i represents the averaged flux over 10 minutes of observation (from 9 averaged 10s images). Additionally, intermittent measurements in Johnson UVB, Sloan z and the narrowbands OIII, NB, Halpha and SII have been recorded as well. The Bochum Galactic Disk Survey is a project to monitor the stellar content of the Galactic disk in a 6 degree wide stripe centered on the Galactic plane. The data has been recorded from September 2010 to September 2019 in Sloan r and i simultaneously with the Robotic Bochum Twin Telescope (RoBoTT) at the Universitaetssternwarte Bochum near Cerro Armazones in the Chilean Atacama desert. It contains measurements of about 2x10^7 stars over nine years. The source images are available from ivo://org.gavo.dc/bgds/q/sia.bgds2.lc_u BGDS DR2 lightcurves in the Johnson U band. Lightcurves are available in i' and r' for all fields and partially in U, B, V, z, OIII, NB, Halpha and SII if they have enough observations.392958obs_idMain identifier of this observation (a single object may have multiple observations in different bands and fields)meta.id;meta.maincharindexedprimarygdr3_idGaia DR3 source_id of this object.meta.id.cross29296384285929734403.0276701637698514e+185.334893060128903e+186.053414365808342e+1860709987389031877120.99951667longnullableraICRS right ascension for this object as mean of the positions obtained from source extraction.pos.eq.ra;meta.main100.047103.78152.056280.33283.6751doubleindexednullabledecICRS declination for this object as mean of the positions obtained from the source extraction.pos.eq.dec;meta.main-65.9373-64.2493-34.0598-4.278910.605271doubleindexednullablefieldSurvey field observed.meta.id;obs.fieldcharnullablemed_magMedian magnitude in Johnson U.magphot.mag;em.opt.U;stat.median5.4094710.517113.81714.787515.20551floatnullableerr_magError in median magnitude in Johnson Umagstat.error;phot.mag;em.opt.U0.0119430.04242280.143450.2702061.830011floatnullableampDifference between brightest and weakest observation.magphot.mag;em.opt;arith.diff00.015640.185370.65400714.61floatnullablefluxMedian flux in the Johnson U band; this is computed from the median magnitude based on Landolt standard stars.mJyphot.flux;em.opt.U;stat.median1.568832.305685.63654117.74413001.81floatnullableerr_fluxError in median flux in the Johnson U bandmJystat.error;phot.flux;em.opt.U0.2037330.3956220.7981064.991712510.281floatnullablenobsNumber of observations of this objectmeta.number;obs22.03.04.041.0shortvar1 if the light curves was classified as variable. 0 otherwise. The variability analysis is done only for r and i.meta.code;src.var00.00.00.001.0shortnullablemjdsAn array containing the time values of the time seriesdtime.epochdoublenullablemagsAn array containing the Johnson U magnitude for the times in mjdmagphot.mag;em.opt.Ufloatnullablemag_errsAn array containing per-epoch errors for the mags arraymagstat.error;phot.magfloatnullabletime_minFirst timestamp in time series (MJD Topocentric UTC)dtime.epoch;stat.min56762.256762.257084.157471.258216.11doubleindexednullabletime_maxLast timestamp in time series (MJD Topocentric UTC)dtime.epoch;stat.max56766.157051.257218.157660.4582701doubleindexednullabletime_avgMean epoch of the observationsdtime.epoch;stat.mean56764.456878.157126.457507.358242.61doubleindexednullablessa_bandpassBandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.instr.bandpassssa:DataID.Bandpasscharindexednullablessa_specstartLower value of spectral coordinatemem.wl;stat.minssa:Char.SpectralAxis.Coverage.Bounds.Start3e-073e-073e-073e-073e-071floatindexednullablessa_specendUpper value of spectral coordinatemem.wl;stat.maxssa:Char.SpectralAxis.Coverage.Bounds.Stop3.9e-073.9e-073.9e-073.9e-073.9e-071floatindexednullablessa_specmidMidpoint of region covered in this datasetminstr.bandpassssa:Char.SpectralAxis.Coverage.Location.Value3.46e-073.46e-073.46e-073.46e-073.46e-071floatnullablessa_apertureAngular diameter of aperture. The aperture is elliptical and adaptively scaled for each source using the Kron radius (1980ApJS...43..305K), as implemented in SourceExtractor (1996A&AS..117..393B). The mean FWHM of all sources for each filter is given.degphys.angSize;instr.fovssa:Char.SpatialAxis.Coverage.Bounds.Extent0.00170.00170.00170.00170.00171floatnullable